A mounting structure of a door basket for a refrigerator is provided. The mounting structure includes a door liner, which defines a rear surface of a door and includes at least one slot that is formed from side to side by recessing a portion of an outer surface of the door liner, a slot cover configured to protect at least one outward projection, which is formed on a rear surface of the door liner by forming the slot, from a pressure of foam for forming an insulating layer, and a door basket, in which a storage space is formed, and which is provided with at least one mounting projection which is inserted into the slot and then slides from side to side. Since the slot cover prevents the slot from being deformed during a foaming process for forming the isolating layer within the door, it is possible to reduce the defective rate of the product and to minimize a thickness of the door liner, which makes it possible to reduce production costs.
